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Dyfyniad Arddull ChicagoTickoo, Sham. AutoCAD 13 with Applications. New Delhi: Galgotia publications, 1994.
Dyfyniad MLATickoo, Sham. AutoCAD 13 with Applications. Galgotia publications, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.